[guessmyname]

> Are you sure? avatars.githubusercontent.com works fine for me.

That’s because they already resolved the issue → https://www.githubstatus.com/incidents/x7njwb481j9b

This is what I saw an hour ago:

        $ echo | openssl s_client -connect avatars.githubusercontent.com:443
        CONNECTED(00000005)
        depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
        verify return:1
        depth=1 C = US, O = DigiCert Inc, CN = DigiCert TLS RSA SHA256 2020 CA1
        verify return:1
        depth=0 C = US, ST = California, L = San Francisco, O = "GitHub, Inc.", CN = *.github.io
    >>> verify error:num=10:certificate has expired
        notAfter=Mar 21 23:59:59 2023 GMT
        verify return:1
        depth=0 C = US, ST = California, L = San Francisco, O = "GitHub, Inc.", CN = *.github.io
        notAfter=Mar 21 23:59:59 2023 GMT
        verify return:1